ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor4276275852 <...> Warning: Permanently added '10.128.0.198' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor4276275852", ["ci2-android-6-1/syz-executor4276275852"], 0x7ffc6c25f280 /* 10 vars */) = 0 brk(NULL) = 0x555560c7e000 brk(0x555560c7ee00) = 0x555560c7ee00 arch_prctl(ARCH_SET_FS, 0x555560c7e480) = 0 set_tid_address(0x555560c7e750) = 305 set_robust_list(0x555560c7e760, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-6-1/syz-executor4276275852", 4096) = 44 getrandom("\x90\x65\xd3\xc4\x1a\xdb\xe6\x7e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560c7ee00 brk(0x555560c9fe00) = 0x555560c9fe00 brk(0x555560ca0000) = 0x555560ca0000 mprotect(0x7f84a696d000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f84a68cac10, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f84a68cd9e0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f84a68cac10, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f84a68cd9e0}, NULL, 8) = 0 executing program write(1, "executing program\n", 18) = 18 mkdir("./myconfig", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mount(NULL, "./myconfig", "configfs", 0, NULL) = 0 mkdirat(AT_FDCWD, "./myconfig/usb_gadget/g1", 0777) = 0 mkdirat(AT_FDCWD, "./myconfig/usb_gadget/g1/functions/uac2.usb0", 0777) = 0 openat(AT_FDCWD, "./myconfig/usb_gadget/g1/functions/uac2.usb0/p_srate", O_WRONLY) = 3 [ 24.357446][ T28] audit: type=1400 audit(1785626295.420:64): avc: denied { execmem } for pid=305 comm="syz-executor427" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.363963][ T305] ================================================================== [ 24.384326][ T28] audit: type=1400 audit(1785626295.420:65): avc: denied { mounton } for pid=305 comm="syz-executor427" path="/root/myconfig" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.384934][ T305] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 [ 24.408974][ T28] audit: type=1400 audit(1785626295.420:66): avc: denied { mount } for pid=305 comm="syz-executor427" name="/" dev="configfs" ino=11415 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=filesystem permissive=1 [ 24.415057][ T305] Free of addr ffff88811e9ad918 by task syz-executor427/305 [ 24.438585][ T28] audit: type=1400 audit(1785626295.420:67): avc: denied { search } for pid=305 comm="syz-executor427" name="/" dev="configfs" ino=11415 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 24.445241][ T305] [ 24.445263][ T305] CPU: 1 PID: 305 Comm: syz-executor427 Not tainted syzkaller #0 [ 24.476611][ T28] audit: type=1400 audit(1785626295.420:68): avc: denied { write } for pid=305 comm="syz-executor427" name="usb_gadget" dev="configfs" ino=11416 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 24.477761][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 24.477790][ T305] Call Trace: [ 24.477797][ T305] [ 24.477804][ T305] __dump_stack+0x21/0x24 [ 24.502086][ T28] audit: type=1400 audit(1785626295.420:69): avc: denied { add_name } for pid=305 comm="syz-executor427" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=dir permissive=1 [ 24.511209][ T305] dump_stack_lvl+0x110/0x170 [ 24.511239][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 24.515084][ T28] audit: type=1400 audit(1785626295.420:70): avc: denied { create } for pid=305 comm="syz-executor427" name="g1" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:configfs_t tclass=dir permissive=1 [ 24.517482][ T305] print_address_description+0x71/0x200 [ 24.522282][ T28] audit: type=1400 audit(1785626295.420:71): avc: denied { write } for pid=305 comm="syz-executor427" name="p_srate" dev="configfs" ino=15292 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 24.542300][ T305] print_report+0x4a/0x60 [ 24.542325][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 24.547605][ T28] audit: type=1400 audit(1785626295.420:72): avc: denied { open } for pid=305 comm="syz-executor427" path="/root/myconfig/usb_gadget/g1/functions/uac2.usb0/p_srate" dev="configfs" ino=15292 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:configfs_t tclass=file permissive=1 [ 24.552053][ T305] kasan_report_invalid_free+0xd5/0xf0 [ 24.642277][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 24.647317][ T305] ? __kmem_cache_free+0xb7/0x1b0 [ 24.652352][ T305] ____kasan_slab_free+0x14f/0x180 [ 24.657482][ T305] __kasan_slab_free+0x11/0x20 [ 24.662300][ T305] slab_free_freelist_hook+0xc2/0x190 [ 24.667715][ T305] ? f_uac2_opts_p_srate_store+0x220/0x2a0 [ 24.673542][ T305] __kmem_cache_free+0xb7/0x1b0 [ 24.678395][ T305] kfree+0x6f/0xf0 [ 24.682117][ T305] f_uac2_opts_p_srate_store+0x220/0x2a0 [ 24.687790][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 24.693969][ T305] ? down_read+0xa6/0xf0 [ 24.698221][ T305] ? __cfi_down_read+0x10/0x10 [ 24.703008][ T305] ? avc_policy_seqno+0x1b/0x70 [ 24.707882][ T305] ? selinux_file_permission+0x2a5/0x510 [ 24.713549][ T305] configfs_write_iter+0x323/0x410 [ 24.718671][ T305] ? __cfi_f_uac2_opts_p_srate_store+0x10/0x10 [ 24.724843][ T305] vfs_write+0x5ef/0xd00 [ 24.729134][ T305] ? __cfi_vfs_write+0x10/0x10 [ 24.733924][ T305] ? memset+0x35/0x40 [ 24.737927][ T305] ? __kasan_check_read+0x11/0x20 [ 24.742971][ T305] ? __fdget_pos+0x2d4/0x380 [ 24.747571][ T305] ksys_write+0x14a/0x260 [ 24.751963][ T305] ? __cfi_ksys_write+0x10/0x10 [ 24.756828][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 24.762480][ T305] __x64_sys_write+0x7b/0x90 [ 24.767100][ T305] x64_sys_call+0x27b/0x9a0 [ 24.771616][ T305] do_syscall_64+0x4c/0xa0 [ 24.776062][ T305] ? clear_bhb_loop+0x30/0x80 [ 24.780790][ T305] ? clear_bhb_loop+0x30/0x80 [ 24.785487][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.791415][ T305] RIP: 0033:0x7f84a68e5ff9 [ 24.795862][ T305] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48 [ 24.815495][ T305] RSP: 002b:00007ffe17feaac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 24.823925][ T305] RAX: ffffffffffffffda RBX: 73666769666e6f63 RCX: 00007f84a68e5ff9 [ 24.831918][ T305] RDX: 0000000000000055 RSI: 0000200000000340 RDI: 0000000000000003 [ 24.839910][ T305] RBP: 00007ffe17feaad8 R08: 00007f84a68cac10 R09: 00007f84a68cac10 [ 24.847983][ T305] R10: 00007f84a68cac10 R11: 0000000000000246 R12: 0000000000000000 [ 24.855988][ T305] R13: 0000000000000002 R14: 00007f84a696dca0 R15: 0000000000000002 [ 24.863980][ T305] [ 24.867026][ T305] [ 24.869360][ T305] Allocated by task 305: [ 24.873604][ T305] kasan_set_track+0x4b/0x70 [ 24.878201][ T305] kasan_save_alloc_info+0x1f/0x30 [ 24.883320][ T305] __kasan_kmalloc+0x95/0xb0 [ 24.887937][ T305] __kmalloc_node_track_caller+0xb1/0x1e0 [ 24.893701][ T305] kstrdup+0x3b/0x80 [ 24.897608][ T305] f_uac2_opts_p_srate_store+0x11a/0x2a0 [ 24.903255][ T305] configfs_write_iter+0x323/0x410 [ 24.908393][ T305] vfs_write+0x5ef/0xd00 [ 24.912648][ T305] ksys_write+0x14a/0x260 [ 24.917005][ T305] __x64_sys_write+0x7b/0x90 [ 24.921612][ T305] x64_sys_call+0x27b/0x9a0 [ 24.926125][ T305] do_syscall_64+0x4c/0xa0 [ 24.930557][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.936484][ T305] [ 24.938822][ T305] The buggy address belongs to the object at ffff88811e9ad900 [ 24.938822][ T305] which belongs to the cache kmalloc-96 of size 96 [ 24.952726][ T305] The buggy address is located 24 bytes inside of [ 24.952726][ T305] 96-byte region [ffff88811e9ad900, ffff88811e9ad960) [ 24.965841][ T305] [ 24.968172][ T305] The buggy address belongs to the physical page: [ 24.974606][ T305] page:ffffea00047a6b40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e9ad [ 24.984860][ T305] flags: 0x4000000000000200(slab|zone=1) [ 24.990531][ T305] raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100042900 [ 24.999122][ T305] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000 [ 25.007731][ T305] page dumped because: kasan: bad access detected [ 25.014144][ T305] page_owner tracks the page as allocated [ 25.019872][ T305] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 197, tgid 197 (dhcpcd), ts 7415541182, free_ts 7190949742 [ 25.037332][ T305] post_alloc_hook+0x1f5/0x210 [ 25.042112][ T305] prep_new_page+0x1c/0x110 [ 25.046633][ T305] get_page_from_freelist+0x2ca9/0x2d20 [ 25.052224][ T305] __alloc_pages+0x1fa/0x610 [ 25.056828][ T305] alloc_slab_page+0x6e/0xf0 [ 25.061433][ T305] new_slab+0x98/0x3e0 [ 25.065509][ T305] ___slab_alloc+0x70f/0xb70 [ 25.070110][ T305] __slab_alloc+0x5e/0xa0 [ 25.074481][ T305] __kmem_cache_alloc_node+0x204/0x2d0 [ 25.079960][ T305] __kmalloc+0xa4/0x1e0 [ 25.084129][ T305] bpf_prepare_filter+0x645/0x11c0 [ 25.089243][ T305] __get_filter+0x2e2/0x410 [ 25.093776][ T305] sk_attach_filter+0x23/0x140 [ 25.098549][ T305] sk_setsockopt+0x18b4/0x26b0 [ 25.103318][ T305] sock_setsockopt+0x5a/0x70 [ 25.107928][ T305] __sys_setsockopt+0x269/0x4e0 [ 25.112792][ T305] page last free stack trace: [ 25.117465][ T305] free_unref_page_prepare+0x80c/0x820 [ 25.122943][ T305] free_unref_page_list+0x117/0x8d0 [ 25.128155][ T305] release_pages+0xc7e/0xce0 [ 25.132760][ T305] free_pages_and_swap_cache+0x86/0xa0 [ 25.138258][ T305] tlb_finish_mmu+0x1b2/0x380 [ 25.142938][ T305] exit_mmap+0x41d/0xc10 [ 25.147184][ T305] __mmput+0x92/0x340 [ 25.151183][ T305] mmput+0x4b/0x150 [ 25.155000][ T305] do_exit+0xa51/0x2850 [ 25.159193][ T305] do_group_exit+0x21b/0x2e0 [ 25.163793][ T305] __x64_sys_exit_group+0x3f/0x40 [ 25.168847][ T305] x64_sys_call+0x7b4/0x9a0 [ 25.173374][ T305] do_syscall_64+0x4c/0xa0 [ 25.177816][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.183738][ T305] [ 25.186061][ T305] Memory state around the buggy address: [ 25.191694][ T305] ffff88811e9ad800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.199757][ T305] ffff88811e9ad880: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc write(3, "\x34\x34\x31\x30\x30\x2c\x34\x38\x30\x30\xbd\x19\x5c\xa7\x37\x9d\xda\x9a\xd6\xf5\x11\xc8\x30\x2c\x38\x38\xfa\x52\x05\x6f\xbb\x9b\x6e\xf6\x51\xcd\x0f\x6f\x87\xbf\x15\xa8\xdc\x1d\x23\xab\x3d\x32\x77\x3d\x57\x1f\xd4\x30\x4a\xad\xad\x37\xf9\x9a\x88\x33\x99\x2c\xa9\xc5\x9f\x29\xdd\x1d\x37\x40\x1f\x74\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 85) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 25.207829][ T305] >ffff88811e9ad900: